Solar in Duncanville, TX
With Oncor's electricity at about 17.9¢ per kWh and 1,523 kWh of sun per kW, solar is worth it for a typical Duncanville home today: about a 12.6-year payback.
- Payback, typical home
- 12.6 yrsTexas: 14 yrs
- 25-year net
- $16,953after paying $12,740
- Sun
- 1,523kWh per kW per year
- Electricity
- 17.9¢1% below U.S. average
A typical Duncanville home, by the numbers
| Utility | Oncor |
|---|---|
| Electricity use | 1,106 kWh a month |
| Best-value system | 4.4 kW, about 10 panels, 6,700 kWh a year (50% of use) |
| Cost | $12,740 |
| First-year savings | $995 |
| Payback | 12.6 years |
| Exported power | No statewide net metering (Texas rule) |
Cash purchase, no federal credit, 2.9% yearly rate increases. Run it with your own numbers.
Homes in Duncanville
- Owner-occupied homes
- 66%
- Single-family detached
- 73%
- Median home value
- $256k
- Median year built
- 1978
- Population
- 39,683
- Roofs suitable for solar†
- 89%
Census ACS 2020–2024. †Share of 11,380 buildings Google Project Sunroof rated technically suitable (2019 snapshot).
Installers working in Duncanville
Public installation records for Texas don't name installers, so we can't rank local companies here. Browse installers in Texas.
Always verify the license and get at least three quotes. Compare quotes side by side.
Questions about solar in Duncanville
Is solar worth it in Duncanville, TX?
For a typical home in Duncanville, solar is worth it at 2026 prices: a 4.4 kW system costs about $12,740 after state incentives, saves about $995 in year one and pays back in about 12.6 years. Enter your address for an estimate based on your roof and bill.
How much solar power does a system produce in Duncanville?
About 1,523 kWh per year for each kW of panels on a south-facing roof, based on PVWatts and local weather. That's 0% more than the Texas average. East- or west-facing roofs produce roughly 10–20% less.
Who is the electric utility in Duncanville?
Most homes in Duncanville are served by Oncor, at about 17.9¢ per kWh on average. Some areas are served by Farmers Electric Cooperative, City of Garland, Trinity Valley Electric Cooperative.
How much do solar panels cost in Duncanville?
A fair cash price is around $2.60 per watt before incentives, so about $12,740 for a 4.4 kW system. There's no federal tax credit for homeowners who buy in 2026.
Nearby
- DeSoto 12.6 yrs
- Cedar Hill 12.7 yrs
- Grand Prairie 12.6 yrs
- Lancaster 12.6 yrs
- Arlington 12.4 yrs
- Midlothian 12.6 yrs
- Mansfield 12.6 yrs
- Dallas 12.7 yrs
- All of Texas
Data: PVWatts (National Laboratory of the Rockies), EIA-861 2025 adjusted to 2026, U.S. Census ACS, LBNL Tracking the Sun, state policy research as of October 2026.